It is very stable, if it fits exactly on the vents, depending on the car, you don't know beforehand. The only thing that bothers me is that it rattles if the phone is not on it or if it doesn't fit exactly on it.

It is the ideal mobile phone holder for car air vents. The main thing is that it has a hook that grips the rail of the air vent from the inside and stabilizes it completely. All the other similar holders I have seen simply wedge into the rail, resulting in them falling off after a few kilometers on the immortal Greek roads.

Additionally, it has a very nice support on the bottom side to keep the phone stable and of course allows you to rotate it and give it the angle you want, so you don't have to look at it crookedly.

Finally, it is worth mentioning that it is very small and sleek when there is no phone on it. The holder "unfolds" as soon as you place the phone on it and keeps it stable.

Very good base and proper fitting on the grilles. The sheet metal broke in about a year but I still use it

After a month of minimal use, something went wrong and now it doesn't close. Also, in terms of build quality, it is mediocre.

Quality and affordable mobile base. The side support component makes all the difference in its application, compared to others.

Completely useless... I wanted it for the air vent in my Corsa D 2010... no comparison to an old no name Chinese one I had and lasted over 10 years... this one can't handle the weight of the phone and rotates, and the ring on the back is tightly closed... the hook holds well, no problem there, but in this specific dashboard there isn't much space and sometimes it presses the alarms... I'll have to look for another one... fortunately it wasn't expensive.

It's fine. It fit very well in a Yaris 2001 with a strange air vent.

Initial first impression is good. However, the arm that holds it on the air vent is somewhat large and overall the placement on the air vent is somewhat strange, resulting in the phone shaking quite a bit and the base wobbling in puddles, etc. It doesn't affect the construction but it does play around with the phone quite a bit.
Placing the phone with one hand is effortless, but taking it out requires a bit of effort, as the arms that hold the phone in the case seem to stick and I either have to do it slowly or use my other hand to hold the base steady and prevent it from lifting with the phone.
Finally, it has a small plastic piece on the bottom of the base to keep it stable, which actually does a good job.
With a smaller support arm on the air vent, it would be even better.
As for durability over time, only time will tell..

One of the best bases. I have it in 3 cars and one is for drift use and with so much shaking it doesn't go anywhere. I have tried many bases so far, it is the best. The money it costs is little for what it offers (compared to all the others. all the work is in the connection of the air vent)

I was pleasantly surprised with this base. Very good and plenty of options for different device sizes. The highlight is the bottom stand that holds it firmly in place.
On the downside, when it is empty and you are driving, it squeaks a lot and can be annoying.
However, out of the 3-4 I tried, this was the best, convenient, and stable.

In Yaris P13, due to the shape of the air vents, which are not rectangular, it is difficult to find the right position for stability. Eventually, I placed it in the circular vent to the left of the steering wheel, but even there it is not very stable.

The support under the base provides counter and holds all the weight of the mobile phone, plus it adds stability. The price will be justified only over time, provided that the plastic parts withstand the sun, etc

Very good base for an air vent. It will never fall and the plastic underneath stabilizes the air vent so that it does not fall down due to weight. The only negative thing I can find is that if you have a large phone case, you may have a little difficulty placing the phone on the base.